Uma ukhetha ama-surfactant ezinhlobo zakho zokuhlanza noma izinhlelo zokusebenza zokucubungula, i-foam iyisici esibalulekile. Isibonelo, ezinhlelweni zokuhlanza eziqinile ngesandla—njengemikhiqizo yokunakekela izimoto noma ukuwasha izitsha okugezwa ngesandla—amazinga aphezulu e-foam avame ukuba yisici esifiselekayo. Lokhu kungenxa yokuthi ukuba khona kwe-foam eqinile kakhulu kubonisa ukuthi i-surfactant iyasebenza futhi yenza umsebenzi wayo wokuhlanza. Ngokuphambene nalokho, ezinhlelweni eziningi zokuhlanza nokucubungula zezimboni, i-foam ingaphazamisa izenzo ezithile zokuhlanza ngomshini futhi ivimbele ukusebenza okuphelele. Kulezi zimo, abenzi be-formulators badinga ukusebenzisa ama-surfactant ane-foam ephansi ukuze banikeze ukusebenza kokuhlanza okufiselekayo ngenkathi belawula ukugcwala kwe-foam. Lesi sihloko sihlose ukwethula ama-surfactant ane-foam ephansi, okuhlinzeka ngendawo yokuqala yokukhetha i-surfactant ezinhlelweni zokuhlanza ezine-foam ephansi.
Izicelo Ezine-Foam Ephansi
Igwebu lidalwa ukushukuma endaweni yokuxhumana nomoya. Ngakho-ke, izenzo zokuhlanza ezihilela ukushukuma okuphezulu, ukuxubana okushefa kakhulu, noma ukufafaza ngomshini kuvame ukudinga ama-surfactants anokulawulwa okufanele kwegwebu. Izibonelo zifaka: ukuwasha izingxenye, ukuhlanza i-CIP (ukuhlanza endaweni), ukuklwebha phansi ngomshini, ukuwasha izingubo zezimboni nezentengiselwano, uketshezi lokusebenza ngensimbi, ukuwasha izitsha zomshini wokuwasha izitsha, ukuhlanza ukudla neziphuzo, nokuningi.
Ukuhlolwa Kwama-Surfactants Aphansi
Ukukhethwa kwama-surfactants—noma inhlanganisela yama-surfactants—okulawula i-foam kuqala ngokuhlaziya izilinganiso ze-foam. Izilinganiso ze-foam zinikezwa abakhiqizi be-surfactant ezincwadini zabo zobuchwepheshe zomkhiqizo. Ukuze kulinganiswe i-foam ngendlela ethembekile, amasethi edatha kufanele asekelwe ezindinganisweni zokuhlolwa kwe-foam eziqashelwayo.
Ukuhlolwa kwe-foam okuvame kakhulu nokuthembekile yi-Ross-Miles foam test kanye ne-high-shear foam test.
•Ukuhlolwa kwe-Ross-Miles Foam ，kuhlola ukukhiqizwa kwe-foam kokuqala (i-flash foam) kanye nokuqina kwe-foam ngaphansi kokushukuma okuphansi emanzini. Ukuhlolwa kungafaka ukufundwa kwezinga le-foam lokuqala, kulandelwe izinga le-foam ngemva kwemizuzu emi-2. Kungenziwa futhi ngamanani ahlukene e-surfactant (isb., 0.1% kanye no-1%) kanye namazinga e-pH. Iningi labafaki be-formula abafuna ukulawula i-foam ephansi bagxila ekulinganisweni kwe-foam kokuqala.
•Ukuhlolwa Kokucheba Okuphezulu (bheka i-ASTM D3519-88).
Lokhu kuhlolwa kuqhathanisa izilinganiso ze-foam ngaphansi kwezimo ezingcolile nezingcolile. Ukuhlolwa okunoboya obuphezulu kuqhathanisa nokuphakama kwe-foam kokuqala nokuphakama kwe-foam ngemva kwemizuzu emi-5.
Ngokusekelwe kunoma yiziphi izindlela zokuhlola ezingenhla, ama-surfactant amaningana emakethe ahlangabezana nezindinganiso zezithako ezine-foaming ephansi. Kodwa-ke, kungakhathaliseki ukuthi iyiphi indlela yokuhlola i-foam ekhethiwe, ama-surfactant ane-foam ephansi kumele abe nezinye izakhiwo ezibalulekile zomzimba nezokusebenza. Kuye ngesimo sokusetshenziswa kanye nendawo yokuhlanza, ezinye izici ezibalulekile zokukhetha i-surfactant zingafaka:
•Ukusebenza kokuhlanza
•Izimfanelo zemvelo, impilo, kanye nokuphepha (EHS)
•Izakhiwo zokukhishwa kwenhlabathi
•Izinga lokushisa elibanzi (okungukuthi, amanye ama-surfactants ane-foam ephansi asebenza kuphela emazingeni okushisa aphezulu kakhulu)
•Ukulula kokwakheka kanye nokuhambisana nezinye izithako
•Ukuqina kwe-peroxide
Kwabaqambi, ukulinganisa lezi zakhiwo nezinga elidingekayo lokulawula i-foam ekusetshenzisweni kubalulekile. Ukuze kufezwe lokhu kulinganisela, kuvame ukudingeka ukuhlanganisa ama-surfactants ahlukene ukuze kuhlangatshezwane nezidingo ze-foam kanye nokusebenza—noma ukukhetha ama-surfactants e-foam aphansi kuya kwaphakathi anokusebenza okubanzi.
Isikhathi sokuthunyelwe: Septhemba 11-2025